Lubricator.



PATBNTED APR. 30, 1907,

G. F. SCHROYER. LUBRIGATOR.

APPLICATION FILED DBC.11.1905.'

Unrrnn srarns Aiagirrnnfr cierren.

LUBFHCATOR.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed December 11,1905. Serial No. 291,168.

To all 'u1/tom t may concern:

Be it known that I, CirAnLns F. SCHROYER, a citizen'of the United States, residing at Chicago, in the county of Cook and State oi Illinois, have invented a certain new and useful Improvement in Lubricators, oi' which the following is a specification.

Wy invention relates to lubricators and particularly to the type known as force 'feed lubricators adapted to be operated by connection with some moving part of the machine on which they are used.

The invention consists generally of an oil cylinder with a plunger to act upon the oil in the cylinder and force it therefrom, and a driving mechanism for advancing the plunger. lt is highly important particularly when the driving mechanism is actuated from a rapidly moving part of the engine, which will very 'frequently be the case, that there should be a very great reduction of speed between the moving part of the engine and the plunger. It the plunger is to be advanced continuously its speed must be almost imperceptibly slow, while if the lubricator is to be operated from an oscillating part the intermediate driving mechanism must be capable of moving the plunger by almost infinitesimal advances. In this application I have shown a form of driving meehanism particularly suitable to this purpose, and which consists generally of a threaded plunger rod, a rotating disk and a peculiar form of compound ratchet device, as it may be termed.

The invention is illustrated in the accompanying drawings, wherein Figure l is a vertical section, Fig. 2, a section taken on line 2 2 of Fig. l, and showing the top ot the oil cylinder in plan Fig. 3, a sectional view on line 3-3 o'll Fig. 1 and Fig. 4, a detail vertical section on line 4 4 of Fig. 2.

Like letters of reference indicate like parts in all the drawings.

A represents the oil cylinder which may be provided 'with the lugs A1 A1 for suitably securing it in place in the machine on which it is used.

A2 A2 represent oil ways the bottom of the cylinder and which, oi. course, may be multiplied to any desired extent.

Over the top oi the cylinder is the dish shaped cover or flanged disk B which rests upon lugs A3 A3 on the cylinder, these lugs which lead from;

l being cut away to Aform shoulders A1A4 which are engaged by the inturned ends of a yoke C extending across the top of the cylinder and ail'ording a bearing for the cover B. 'I he lugs A3 are provided with stops A5 A5 and the yoke has a thumb screw B1 which takes into one of the lugs A so as to hold the yoke in position.

The cover B and the yoke C are apertured centrally and through this aperture extends the plunger rod D carrying a plunger consisting of a metal disk D1, a disk of packing D2 with its edges turned over as shown at D3 and a washer D4, these parts being secured to the end of the plunger rod by means of a nut Di. The plunger rod D is screw threaded through the greater part or its length as shown at D, the threaded portion being engaged by a rotating disk E located between the cover B and the llange of the oil cylinder'. This disk preferably has the lower hub E1 iitting snugly into the upper end of the oil cylinder and the upper hub E2 extending through the cover B and bearing against the recessed center part of the yoke C. This provides for an accurate centering of the plunger and gives a strong bearing Yfor the rotating disk against the upward thrust of the plunger rod. To prevent rotation of the plunger rod with the disk, the rod is provided with a longitudinal groove D7 into 'which extends a removable key D8 which for convenience may be secured to the yoke by the chain D9 and fasten() d to the eye screw D10. To prevent rotation of the disk E by the back movement of cover B I provide in the yoke a fiber plug C1 adjustably held against the upper 'lace of the hub E2 by means of a screw O2. This plug serves as a brake.

The form ol` apparatus herein described is particularly adapted to be actuated from some oscillating part of the machine on which the lubricator is used. I therefore drive the disk E intermittently through very short arcs. The apparatus which I have designed to accomplish this, consists ol: a number of p awls acting upon a ratchet E3 formed on the perimeter of the wheel. I have shown four of these pawls indicated respectively by the letters F, F1, F2 and F3, the pawls being pivoted in recesses B2 in the under side ol`- the cover B and held against the ratchet by means of the springs F4. On the cover B is a lug B3 having the slot B1 through which extends the pin B5 which is held adjustably in the slot by the wing nut B0.

IOO

IIO

The cylinder A is formed with a lug or bracket G to 'which is-pivoted an oscillating arm G1 provided with a slot G2. As here shown the screw G3 serves as a pivot for the part G1. The pin B5 projects into the slot G2. The arrn G1 is designed to be connected in any-desired manner not here shown, with some moving part of the engine so that it is given a reciprocating movement. Vith each oscillation of the arm G1 the cover B will be given a partial rotation one way or the other and the amplitude of this movement may be varied from Zero to a certain maximum by setting the pin B5 at different positions in the slot. of the oscillating arm the operation of the lubricator may be stopped without disconnecting any of the parts.

rI`he arrangement of the pawls F, F1, etc., deserves particular attention for by this arrangement I am able to get a very slow feed when necessary. It would not be practical to make the teeth of the ratchet E3 small enough to provide the minimum oil feed which may under certain circumstances be desired, and to meet this difficulty I have devised the use of a number of pawls which act successively to move the disk a fraction of the distance measured. by one tooth. This is clearly shown in Fig. 3. Here the pawl F, supposing the cover B to be at the beginning of its forward oscillation, is ready to act upon the ratchet, i If the arc measuring the rotation of the cover B is equivalent to a single notch of the ratchet E or is a multiple of that distance, the pawl F alone will accomplish the work, the other pawls remaining idle. If, however, the speed of the oil feed is to be so reduced that the cover must rotate a distance measured by a fraction only of a notch, then one or other of the pawls will come into play with the second oscillation of the arm G1. It will be seen, therefore, that by a proper adjustment of the pin B5, the rotation of the disk E3 may be reduced to that fractional part of a single tooth indicated by the number of pawls with which the device is supplied. In the apparatus shown in the drawings, the minimum rotation'of the disk is fixed at one-fourth of a tooth. As will be seen by inspection of Fig. 3, the pawls are so located as to come into play in the order indicated by their exponent reference letters, supposing that the intermittent rotation of the disk is measured by an arc equivalent to one-fourth of a tooth. With the second oscillation of G1 pawl F1 will fall behind the tooth on which it rests in the position shown in Fig. 3, with the third oscillation pawl F2 will come into place and with the fourth, pawl F3. It is, of course, obvious that these pawls might be multiplied to any extent, this being a matter depending upon the minimum feed desired and upon convenience in the mechanical construction.J

By moving the pin over the pivot G3 I have found some difficulty in the use of devices of this character in the insertion and removal of the plunger when the cylinder is filled. In replacing the plunger after oil has been put into the cylinder, a certain amount of air is caught between the cylinder and the plunger which it is difficult to get ridof. In order to minimize this difficulty, I have provided the upper part of the cylinder' with a cock H. The oil is poured into the top of the cylinder so as to come as near as possible to the level of the cock which is opened when the plunger is inserted. In removing the plunger the cock is also opened so as to break the vacuum above the plunger. In order to automatically throw the machine out of operation when the plunger has reached the bottom of the cylinder the upper part of the rod D is left smooth as shown at D11. The upper end of the rod may be provided with a wheel D12 having the hand grip D13 so that by removing the key D8 the plunger may be screwed down by hand.

rIhe use and operation of my invention are as follows: To iill the device, the thumb screw B1 is unscrewed, which permits the yoke to be turned free of the lugs. The yoke, together with the plunger, the disk and the cover, may then be removed from the cylinder, the cock H being preferably open so as to break the vacuum which has been formed above the plunger. rFhe oil is then poured into the top of the cylinder, the plunger replaced and screwed down upon the oil which is conveniently done by means of the handle D13, the cock H remaining open so as to allow as much of the air above the oil to escape as is possible. The oscillating leverv G1 is connected with some part of the machine as, for example, with the eccentric, and when it is desired to start the oil, the pin B5 is moved outward a proper distance from the center of oscillation of G1.

The oil used for the lubrication of machines is a more or less stiff viscous liquid often ruiming hard, particularly in cold weather. My invention which involves the application of force to a considerable mass of oil insures uniform feed. The upward thrust of the operatingI disk will, of course, be considerable and this is taken care of by means of the yoke C.

I claim: i l

1. In a lubricator, the combination of an oil cylinder with a plunger having a threaded stem, a disk at the top of the cylinder having a central threaded aperture to receive the threaded stem, a dish-shaped member extending over and engaging with the disk whereby the movement of the former is imparted to the latter, and an oscillating driving member, such member and the dish-shaped member adjustably connected one to the other so as to vary the amplitude of motion of the dishshaped member.

IOO

In a lubricator,` the combination ci an oil 'cylinder with a plunger having a threaded stem, a disk at the top of the cylinder having a central threaded aperture to receive the threaded stem, a dish-shaped member extending over and engaging with the disk whereby the movement of t-he former is imf parted t'o the latter, and an oscillating driv` ing member', said member and the dishshaped member constantly and adjustabi)Y connecte-d so as to vary the amplitude ot motionef the dish-shaped member.

3. In a lubricator, the combination ol an oil cylinder with a plunger having a threaded stem, a disk with a central threaded aperture to receive the threaded stem ol' the plunger, means for rotating the plunger, and a brake consisting of a plunger ol' soit material bearing upon the rotating part.

4. In a lubrieator, the combination ot an oil cylinder with a plunger having a tln'eaded stem, a disk at the top of the cylinder having a central threaded aperture to receive the threaded stem, an oscillating member' extending over said disk, connections between said oscillatingmember and the disk whereby the movement of the lformer is imparted to the latter, means for oscillating said oscillating member, and removable yoke engaging with the oil cylinder and extending over said oscillating member and disk so as to llorm a bearing therefor.

5. In a lubricator, the combination of an oil cylinder with a plunger having a screw threaded stem, a pair of driving disks surrounding said stem, and a driving device, one of the disks being a ratchet-disk and screw threaded to engage with the stem, and the other connected with the driving device, and having pawls to engage with the teeth ot the ratchet disk.

6. In a lubricator,` the combination ol: an oil cylinder with a plunger having a threaded stem, a ratchet disk at the top of the cylinder having a central threaded aperture to receive the threaded stem, an oscillating device eXtending over said disk, a series ot paWls on the inside of said oscillating device and arranged so as to engage successively with the teeth ot the ratchet disk, and means for oscillating said oscillating device.

7. In a lubricator, the'combination oi" an A oil cylinder with a plunger having a threaded stem, a disk with a central threaded aperture to receive the threaded stem ofthe plunger, a yoke in engagement with the oil cylinder and extending over the disk and it'orming a bearing therefor, a brake consisting of a plug oi sott material associated with said yoke and bearing upon the disk, and means for intermittently rotating said disk.

8. In a lubricator, the combination olt an l oil cylinder with a plunger having a threaded stem, a disk at the top of the cylinder having a central threaded aperture to receive the threaded stem, an oscillating device engaging with the disk whereby the movement oi the lormer iim'iartcd to the latter, a pivoted arm on the outside ol` the oil cylinder, and means l'or engaging said oseilhiting device with said arm at di'lierent distances i'rom the pivotal point olE the arm.

9. In a lnlricator, the combination ot an oil cylinder with a ph'nger having a threaded stem, a disk at the top ot the cylinder having a central threaded apertire to receive the threaded stem, an osciliating device engaging with the disk whereby the movement ol' the i'orner is imparted to the latter, a pivoted slotted arm on the outside of the oii cylinder, said oscillating device provided with a slot, and a set pin adapted to l'c set so as to engage with the slots el" the oscillating device and ot said pivoted arm at a variety olf positions.

10. In a lul'ricator, the combination of an oil cylinder with a plrnger having a screw threaded stem, a pair of driving disks siirrounding said stem, one cup-shaped and inclosing the other, and a driving device, one o'l" the disks screw threaded and engaging with the stem, and the other connected with the driving device, and connecting devices between the disks.

11. In a lnlvricator, the combination of an oil cylinder with a plunger having a screw threaded stem., a ratchet disk at the top of the cylinder with a hub extending therein, a cover mounted so as to oscillate over said disk, a series ot pawls on the interior ol :said cover adapted to engage in succession with the teeth ot the ratchet disk, a removable yoke engaging with the oil cylinder and eX- tending over said disk and cover and forming a bearing therefor, a pivoted arm on the outside ot said oil cylinder, and means for engaging the cover with said arm at di'il'erent distances 'from its pivot. y.;

12. In a lubricator, the combination oi an oil cylinder with a 'plunger' having a screw threaded stem, a pair of driving disks stirrounding said stem, and a driving device, one

IOO

[Ofi

IIO

of said disks screw threaded to engage the i bearing vfor the of'ter disk, a connection hctween the outer disk and thc driving device, and 'a' connecting device between the two disks.

14. In a luhricator, the combination of an oil cylinder, with a 'alunger having a stein, a rotatable driving sk connected with the stem to advance the plunger, an oscillating device in contact with the rotating disk, connections between the disk and the oscillating device whereby thy disk is rotated with the forward oscillation' of the oscillating device, and a brake comprising a body of material bearing upon the disk to keep the disk hom being rotated back ith the backward oscillations of the oscill ting device.

15. In a lubricatf r, the combination of an oil cylinder with a plunger having a stein, a rotatable driving disk connected with the stem, a second disk mounted on the rotatable disk, means for imparting oscillating movement to the second disk, connections between the second disk and the 'lirst disk whereby the first disk is rotated with the forward oscillations of the second disk, and a brake consisting of a body of material bearing upon the first disk to keep the same from being rotated back with the backward oscillations of the second disk.

16. In a lubricator, the combination of an oil cylinder, with a plunger therein, a ratchet disk engaging with the plunger so as to advance the saine in the cylinder, an oscillating device, means for imparting oscillating Inotion to the same, and means for rotating the ratchet disk from the oscillating device through arcs less than the distance between its teeth comprising a series of pawls mounted upon the oscillating device at distances different from the distances between the teeth of the ratchet disk.

CHARLES F. SCHROYER.

Witnesses:

HOMER L. Knorr, PERGIVAL WV. TRUMAN. 

